CN114593336B - Double-shaft non-magnetic turntable for external field calibration of geomagnetic survey satellite vector magnetometer - Google Patents
Double-shaft non-magnetic turntable for external field calibration of geomagnetic survey satellite vector magnetometer Download PDFInfo
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- CN114593336B CN114593336B CN202210173234.0A CN202210173234A CN114593336B CN 114593336 B CN114593336 B CN 114593336B CN 202210173234 A CN202210173234 A CN 202210173234A CN 114593336 B CN114593336 B CN 114593336B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
- F16M11/12—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/22—Undercarriages with or without wheels with approximately constant height, e.g. with constant length of column or of legs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/40—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for measuring magnetic field characteristics of the earth
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The invention relates to a portable double-shaft non-magnetic turntable for external field calibration of a geomagnetic mapping satellite vector magnetometer, which has the advantages of non-magnetism, oiliness, compact structure, portability, low cost, flexible operation and the like through a reasonable structure, and realizes the posture adjustment of an optical integrated platform integrating 1 vector magnetometer and 3 high-precision star sensors in an external field calibration state, namely the posture rotation adjustment of two vertical and horizontal shafts around the center of a measured vector magnetometer. In the geomagnetic surveying and mapping satellite field, the problem of posture adjustment of high-precision magnetic measurement optical integrated platform external field calibration is solved for the first time. The invention has simple structure and convenient operation, can be used for the external field calibration of the geomagnetic surveying and mapping satellite high-precision magnetic surveying and optical integrated platform, and can also be used for the calibration and the inspection of magnetic measuring equipment, magnetic navigation equipment or other gesture measuring equipment after adjusting design parameters according to different design requirements.
Description
Technical Field
The invention relates to a double-shaft non-magnetic turntable for external field calibration of geomagnetic mapping satellite vector magnetometers and a method for posture adjustment by using the same.
Background
The high-precision vector magnetic field mapping on geomagnetic mapping satellites is realized by integrating 1 vector magnetometer and 3 high-precision star sensors on an integrated rigid platform to form a high-precision magnetic measurement optical integrated platform, and utilizing the inertial space pointing measurement capability of the star sensors to realize the pointing measurement of the vector magnetometer through coordinate conversion. On the ground, a high-precision magneto-optical integrated platform is required to be installed on a proper two-axis non-magnetic turntable under the natural condition of an external field with a better magnetic environment, and meanwhile, the calibration measurement of a planetary sensor and a vector magnetometer is carried out, so that the transmission matrix of a measurement coordinate system of the planetary sensor and the vector magnetometer is determined.
The envelope size of the high-precision magneto-optical integrated platform is about 800mm multiplied by 400mm, the size of the mounting surface is 500mm multiplied by 250mm, the height from the center of the sensor to the mounting surface is 110mm, and the weight is about 8kg. During measurement, the high-precision magneto-optical integrated platform needs to rotate around the center of the sensor by +/-40 degrees around a horizontal axis, and is locked at intervals of 8 degrees; 360 degrees of rotation around the vertical shaft and locking at any position. The external field calibration environment of the high-precision magnetic measurement optical integrated platform needs no large-scale highway, factories, mines and residential areas around, the electromagnetic environment is clean, the surrounding is free from light pollution, and the environment has good star viewing conditions.
The common biaxial nonmagnetic turntable is used for measuring a small magnetic sensor in a laboratory environment, and cannot directly meet the requirements of large size, high bearing capacity and portability of a outfield test of a high-precision magnetic measurement optical integrated platform.
Disclosure of Invention
The technical solution of the invention is as follows: the dual-axis non-magnetic turntable and the method for external field calibration of the geomagnetic mapping satellite vector magnetometer are provided, and the problem of posture adjustment of a high-precision magnetic measurement optical integrated platform during external field calibration is solved.
The technical scheme of the invention is as follows:
a biaxial non-magnetic turntable for external field calibration of geomagnetic mapping satellite vector magnetometers comprises a base part, a vertical axis rotating part and a horizontal axis rotating part;
the base part comprises a foot support and a base main body, and a circle of bulges with angle scales are arranged around the base main body; four foot supports are arranged below the base main body and used for leveling the whole equipment;
the vertical shaft rotating part comprises an annular guide rail, a vertical rotating shaft sleeve, a middle layer connecting frame, a vertical rotating guide shoe, a vertical rotating locking seat and a vertical rotating locking mechanism; the annular guide rail is arranged on the inner side of a circle of protrusions of the base main body, the vertical rotating shaft is arranged at the center of the base main body, and the middle layer connecting frame is connected with the vertical rotating shaft through a vertical rotating shaft sleeve to realize a rotating function;
the middle layer connecting frame is of an inverted T-shaped structure, the center of the horizontal cross beam is provided with a mounting hole of a vertical rotating shaft sleeve, and four corners of the horizontal cross beam are contacted with the annular guide rail through four sets of vertical rotating guide shoes, so that the equipment mounted on the middle layer connecting frame is supported; the two ends of the horizontal cross beam of the middle layer connecting frame are respectively provided with a vertical rotation locking seat, and the locking of any position is realized through a vertical rotation locking mechanism;
the horizontal shaft rotating part comprises a horizontal rotating guide rail, a horizontal rotating locking mechanism, a horizontal rotating locking seat, a horizontal rotating angle positioning disk, a horizontal rotating angle positioning pin, a positioning disk fixing pin, a horizontal rotating shaft inner shaft sleeve, a horizontal rotating shaft outer shaft sleeve, a shaft sleeve positioning ring, an end face sliding ring, a top layer connecting frame, a horizontal rotating shaft and a horizontal rotating guide shoe;
the top layer connecting frame is connected to the middle layer connecting frame through the horizontal rotating shaft outer shaft sleeve, the horizontal rotating shaft inner shaft sleeve, the shaft sleeve positioning ring, the end face sliding ring and the horizontal rotating shaft, and realizes rotation and auxiliary support around the horizontal shaft;
a horizontal arc-shaped rotary guide shoe is arranged below the top layer connecting frame, and the support on the middle layer connecting frame is realized through a horizontal rotary guide rail; the horizontal rotation angle locating plate is installed at the end part of the horizontal rotating shaft extending out of the middle layer connecting frame, locating holes corresponding to different angles are formed in the horizontal rotating shaft, the horizontal rotation angle locating plate is installed at the end part of the horizontal rotating shaft by utilizing a locating plate fixing pin, the horizontal rotation locking seat is installed at the corresponding position of the middle layer connecting frame, the locating of different angles is realized through the horizontal rotation angle locating pin, and meanwhile auxiliary locking is realized by utilizing the horizontal rotation locking mechanism.
Further, the base body is of a disc-shaped structure, and a plurality of lightening holes for lightening design are formed in the base body; the foundation support and the base body are made of aluminum alloy materials.
Furthermore, the annular guide rail, the vertical rotating shaft sleeve and the vertical rotating guide shoe are made of polytetrafluoroethylene materials, so that sliding friction force is reduced.
Further, the vertical beam of the middle layer connecting frame is positioned at 1/4 of the horizontal cross beam.
Furthermore, the horizontal rotating guide rail, the horizontal rotating shaft outer shaft sleeve, the horizontal rotating shaft inner shaft sleeve, the end face sliding ring and the horizontal rotating guide shoe are made of polytetrafluoroethylene materials, so that sliding friction force is reduced.
Further, the top layer link is flat plate structure, and one end is provided with the triangle-shaped support, and this triangle-shaped support top is provided with the installation through-hole, and horizontal pivot passes this installation through-hole, terminal surface slip ring, horizontal pivot inner shaft sleeve, axle sleeve locating ring, horizontal pivot in proper order and overlaps on the vertical roof beam mounting hole of middle level link, and horizontal pivot outer shaft sleeve is in horizontal pivot inner shaft sleeve and axle sleeve locating ring outside, with vertical roof beam mounting hole contact.
Further, the top layer connecting frame is used for installing a magneto-optical integrated platform, and the magneto-optical integrated platform comprises a connecting part, a star sensor and a vector magnetometer; one end of the rod-shaped connecting part is provided with a plurality of star sensors, and the other end is provided with a vector magnetometer.
Further, the center of the vector magnetometer is located on the vertical rotating shaft and the horizontal rotating shaft of the non-magnetic rotating table at the same time.
Further, the extending direction of the connecting part, the extending direction of the top layer connecting frame and the extending direction of the middle layer connecting frame horizontal cross beam are parallel to the horizontal rotating shaft of the nonmagnetic turntable.
Furthermore, the invention also provides a posture adjusting method, which comprises the following steps:
taking out the double-shaft non-magnetic turntable from a packaging box, and placing the double-shaft non-magnetic turntable on an external field calibration site;
leveling a base main body of the double-shaft nonmagnetic turntable by utilizing a foundation support, and adjusting a top layer connecting frame to a horizontal position;
step three, mounting a magnetic measurement optical integrated platform integrated with a vector magnetometer and three star sensors on a double-shaft nonmagnetic turntable;
step four, rotating the top layer connecting frame around a horizontal shaft together with the magnetic measurement optical integrated platform, adjusting the top layer connecting frame to a target angle, and locking the top layer connecting frame by utilizing a horizontal rotation angle positioning pin and a horizontal rotation locking mechanism;
step five, rotating the middle layer connecting frame and the top layer connecting frame around a vertical shaft together with the magnetic measurement optical integrated platform, adjusting the angles to target angles, and locking by utilizing vertical rotation locking mechanisms at two ends;
and step six, after the calibration of the external field of the vector magnetometer is completed, the top layer connecting frame is adjusted to a horizontal position, the magneto-optical integrated platform is disassembled, and the double-shaft non-magneto turntable equipment is arranged in a packaging box.
Compared with the prior art, the invention has the advantages that:
(1) The portable double-shaft non-magnetic turntable realizes the posture rotation adjustment of the vertical and horizontal shafts around the center of the measured vector magnetometer on the turntable through the optimal design, has compact structure and light weight, simultaneously takes into account the portability of the large envelope size bearing and the equipment of the integrated rigid platform to be measured, has the advantages of large bearing, light weight and low cost, greatly lightens the labor intensity of personnel and improves the working efficiency.
(2) The rotating part of the invention adopts a sliding friction structure of polytetrafluoroethylene nonmetallic nonmagnetic material, and has the advantages of no magnetism, no oil, simple integral structure, low cost and flexible operation.
(3) The top layer connecting frame of the horizontal shaft rotating part adopts a half-cantilever rotating supporting structure of the horizontal rotating shaft and the arc-shaped rotating guide shoe through structural optimization design, so that the structural strength and the operation flexibility are ensured, the size of the equipment is reduced, and the weight of the equipment is reduced.
Drawings
FIG. 1 is a schematic diagram of a portable biaxial nonmagnetic turntable according to the present invention;
FIG. 2 is a schematic view of a horizontal shaft portion of the apparatus of the present invention;
FIG. 3 is a schematic diagram of an integrated fixed high-precision magneto-optical platform for an apparatus of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
When the invention improves the existing method, certain restriction exists: for example, the vector magnetometer is arranged at one end of the high-precision magneto-optical integrated platform, and the turntable is required to realize the functions of two-axis high-precision movement and locking around the center of the vector magnetometer; considering test accessories such as cables, the bearing quality of the turntable is considered according to 10 kg; in order to meet the external field calibration environment of a high-precision magnetic measurement optical integrated platform, a calibration site is generally in mountain areas without hoisting and transporting equipment such as a crane, and the non-magnetic turntable is required to be simple in structure and portable, and the weight can meet the carrying requirements of two persons and has a leveling function. Therefore, for a large-size and high-bearing portable double-shaft non-magnetic turntable device, special optimization design is needed to realize the double-shaft non-magnetic turntable device.
In this embodiment, the portable dual-axis non-magnetic turntable apparatus has a structure as shown in fig. 1 and 2, and includes a base portion, a vertical axis rotating portion, and a horizontal axis rotating portion.
The base part comprises a foot support 1 and a base main body 2. The base main body 2 is made of aluminum alloy materials and is light in weight, and a circle of bulges with angle scales are arranged around the base main body 2; 4 aluminum alloy foot supports 1 are arranged below the base main body 2 and used for leveling the whole equipment. The base body 2 has a disk-like structure, and is provided with a plurality of lightening holes for lightening design.
The vertical shaft rotating part comprises an annular guide rail 3, a vertical rotating shaft 4, a vertical rotating shaft sleeve 5, a middle layer connecting frame 6, a vertical rotating guide shoe 8, a vertical rotating locking seat 9 and a vertical rotating locking mechanism 10. The annular guide rail 3, the vertical rotating shaft 4, the vertical rotating shaft sleeve 5 and the vertical rotating guide shoe 8 are made of polytetrafluoroethylene materials, so that sliding friction force is reduced; the rest part materials are all aluminum alloy. The annular guide rail 3 is arranged on the inner side of a circle of protrusions of the base main body 2, and the vertical rotating shaft 4 is arranged at the center of the base main body 2; the middle layer connecting frame 6 is connected with the vertical rotating shaft 4 through the vertical rotating shaft sleeve 5, so that a rotating function is realized;
the middle connecting frame 6 is of an inverted T-shaped structure, the center of a horizontal cross beam of the middle connecting frame is provided with a mounting hole of a vertical rotating shaft sleeve 5, and four corners of the horizontal cross beam are contacted with the annular guide rail 3 through four sets of vertical rotating guide shoes 8, so that the equipment mounted on the middle connecting frame 6 is supported; the two ends of the horizontal cross beam of the middle layer connecting frame 6 are respectively provided with a vertical rotation locking seat 9, and the locking of any position is realized through a vertical rotation locking mechanism 10;
the vertical beam of the middle layer connecting frame 6 is positioned at 1/4 of the horizontal beam.
The horizontal shaft rotating part comprises a horizontal rotating guide rail 7, a horizontal rotating locking mechanism 11, a horizontal rotating locking seat 12, a horizontal rotating angle positioning disk 13, a horizontal rotating angle positioning pin 14, a positioning disk fixing pin 15, a horizontal rotating shaft inner shaft sleeve 17, a horizontal rotating shaft outer shaft sleeve 16, a shaft sleeve positioning ring 18, an end face sliding ring 19, a top layer connecting frame 20, a horizontal rotating shaft 21 and a horizontal rotating guide shoe 22.
Wherein, the horizontal rotation guide rail 7, the horizontal rotation shaft outer shaft sleeve 16, the horizontal rotation shaft inner shaft sleeve 17, the end face sliding ring 19 and the horizontal rotation guide shoe 22 are made of polytetrafluoroethylene materials, so that sliding friction force is reduced; the rest part materials are all aluminum alloy.
The top layer connecting frame 20 is connected to the middle layer connecting frame 6 through a horizontal rotating shaft outer shaft sleeve 16, a horizontal rotating shaft inner shaft sleeve 17, a shaft sleeve positioning ring 18, an end face sliding ring 19 and a horizontal rotating shaft 21, and realizes the functions of rotation around the horizontal shaft and auxiliary support;
specifically, the top-layer connecting frame 20 is of a flat plate structure, one end of the top-layer connecting frame is provided with a triangle-shaped support, the top end of the triangle-shaped support is provided with a mounting through hole, the horizontal rotating shaft 21 sequentially penetrates through the mounting through hole, the end face sliding ring 19, the horizontal rotating shaft inner shaft sleeve 17, the shaft sleeve positioning ring 18 and the horizontal rotating shaft inner shaft sleeve 17 to be connected to the vertical beam mounting hole of the middle-layer connecting frame 6, and the horizontal rotating shaft outer shaft sleeve 16 is sleeved outside the horizontal rotating shaft inner shaft sleeve 17 and the shaft sleeve positioning ring 18 and is in contact with the vertical beam mounting hole.
A horizontal arc-shaped rotary guide shoe 22 is arranged below the top layer connecting frame 20, and the support on the middle layer connecting frame 6 is realized through a horizontal rotary guide rail 7. The horizontal rotation angle positioning disk 13 is provided with positioning holes corresponding to different angles, the horizontal rotation angle positioning disk 13 is installed at the end part of the horizontal rotating shaft 21 by utilizing the positioning disk fixing pin 15, the horizontal rotation locking seat 12 is installed at the corresponding position of the middle layer connecting frame 6, the positioning of different angles is realized by utilizing the horizontal rotation angle positioning pin 14, and meanwhile, the auxiliary locking is realized by utilizing the horizontal rotation locking mechanism 11.
As shown in fig. 3, the top-layer connecting frame 20 is used for installing a magneto-optical integrated platform 23, and the magneto-optical integrated platform 23 comprises a connecting part, a star sensor 25 and a vector magnetometer 24; one end of the rod-shaped connecting part is provided with a plurality of star sensors 25, and the other end is provided with a vector magnetometer 24. The center of the vector magnetometer 24 is located on both the vertical and horizontal axes of the nonmagnetic turntable.
The attitude adjustment method of the turntable for the external field calibration of the geomagnetic mapping satellite vector magnetometer comprises the following steps:
a) The portable double-shaft non-magnetic turntable equipment is taken out of a packing box and placed on an external field calibration site.
b) Leveling a base main body 2 of the portable double-shaft non-magnetic turntable equipment by utilizing a ground anchor support 1, and adjusting a top layer connecting frame 20 to a horizontal position;
c) The high-precision magnetic measurement optical integrated platform 23 integrating the vector magnetometer 24 and the 3 high-precision star sensors 25 is arranged on the portable double-shaft non-magnetic turntable equipment, as shown in figure 2; since the state of the high-precision magneto-optical integrated platform 23 is known, the vector magnetometer 24 is respectively centered on the vertical rotating shaft and the horizontal rotating shaft of the device through advanced design.
d) Rotating the top connecting frame 20 around a horizontal axis together with the high-precision magneto-optical integrated platform 23, adjusting the top connecting frame to a target angle, and locking the top connecting frame by utilizing the horizontal rotation angle positioning pin 14 and the horizontal rotation locking mechanism 11;
e) The middle layer connecting frame 6 and the top layer connecting frame 20 are rotated around a vertical shaft together with the high-precision magneto-optical integrated platform 23, adjusted to a target angle and locked by utilizing the vertical rotation locking mechanisms 10 at the two ends;
f) After the calibration of the external field of the vector magnetometer is completed, the top layer connecting frame 20 is adjusted to the horizontal position, the high-precision magneto-optical integrated platform 23 is disassembled, and the portable double-shaft non-magnetic turntable equipment is put into a packaging box.
In this embodiment, specific parameters of the portable dual-axis non-magnetic turntable device for external field calibration of geomagnetic mapping satellite vector magnetometer are as follows:
a) The self weight of the portable double-shaft non-magnetic turntable equipment is 20kg, and the maximum bearing weight is 10kg.
b) The portable double-shaft non-magnetic turntable equipment has the envelope size of the fixed high-precision magneto-optical integrated platform of 800mm multiplied by 400mm, the size of a mounting surface of 500mm multiplied by 250mm, and the height of the center of a sensor from the mounting surface of 110mm.
c) The portable double-shaft non-magnetic turntable equipment is locked at any position, wherein the rotation angle of the portable double-shaft non-magnetic turntable equipment around a vertical shaft is 0-360 degrees; rotated about the horizontal axis by 40 degrees and locked every 8 degrees.
The portable double-shaft non-magnetic turntable device has the advantages of compact structure and light weight, can conveniently realize the rotation and locking of two shafts, and meets the requirements of external field calibration of geomagnetic mapping satellite vector magnetometers.
The above embodiment is only an example of the application of the present invention, and those skilled in the art may make various modifications and substitutions according to different design requirements and design parameters without departing from the technical solution of the present invention, and also falls within the protection scope of the present invention.
What is not described in detail in the present specification is a well known technology to those skilled in the art.
Claims (10)
1. A biax non-magnetism revolving stage for geomagnetic survey satellite vector magnetometer external field is markd, its characterized in that: comprises a base part, a vertical shaft rotating part and a horizontal shaft rotating part;
the base part comprises a foot support (1) and a base main body (2), and a circle of bulges with angle scales are arranged around the base main body (2); four foot supports (1) are arranged below the base main body (2) and used for leveling the whole equipment;
the vertical shaft rotating part comprises an annular guide rail (3), a vertical rotating shaft (4), a vertical rotating shaft sleeve (5), a middle connecting frame (6), a vertical rotating guide shoe (8), a vertical rotating locking seat (9) and a vertical rotating locking mechanism (10); the annular guide rail (3) is arranged on the inner side of a circle of protrusions of the base main body (2), the vertical rotating shaft (4) is arranged at the center of the base main body (2), and the middle connecting frame (6) is connected with the vertical rotating shaft (4) through the vertical rotating shaft sleeve (5) to realize a rotating function;
the middle layer connecting frame (6) is of an inverted T-shaped structure, the center of the horizontal cross beam is provided with a mounting hole of the vertical rotating shaft sleeve (5), and four corners of the horizontal cross beam are contacted with the annular guide rail (3) through four sets of vertical rotating guide shoes (8), so that the equipment mounted on the middle layer connecting frame (6) is supported; the two ends of the horizontal cross beam of the middle layer connecting frame (6) are respectively provided with a vertical rotation locking seat (9), and the locking at any position is realized through a vertical rotation locking mechanism (10);
the horizontal shaft rotating part comprises a horizontal rotating guide rail (7), a horizontal rotating locking mechanism (11), a horizontal rotating locking seat (12), a horizontal rotating angle positioning disc (13), a horizontal rotating angle positioning pin (14), a positioning disc fixing pin (15), a horizontal rotating shaft inner shaft sleeve (17), a horizontal rotating shaft outer shaft sleeve (16), a shaft sleeve positioning ring (18), an end face sliding ring (19), a top layer connecting frame (20), a horizontal rotating shaft (21) and a horizontal rotating guide shoe (22);
the top layer connecting frame (20) is connected to the middle layer connecting frame (6) through a horizontal rotating shaft outer shaft sleeve (16), a horizontal rotating shaft inner shaft sleeve (17), a shaft sleeve positioning ring (18), an end face sliding ring (19) and a horizontal rotating shaft (21), and realizes rotation and auxiliary support around the horizontal shaft;
a horizontal arc-shaped rotary guide shoe (22) is arranged below the top layer connecting frame (20), and the support on the middle layer connecting frame (6) is realized through a horizontal rotary guide rail (7); the horizontal rotation angle positioning disk (13) is arranged at the end part of the horizontal rotating shaft (21) extending out of the middle layer connecting frame (6), positioning holes corresponding to different angles are formed in the horizontal rotating shaft, the horizontal rotation angle positioning disk (13) is arranged at the end part of the horizontal rotating shaft (21) by utilizing a positioning disk fixing pin (15), the horizontal rotation locking seat (12) is arranged at the corresponding position of the middle layer connecting frame (6), positioning of different angles is realized by utilizing the horizontal rotation angle positioning pin (14), and auxiliary locking is realized by utilizing the horizontal rotation locking mechanism (11).
2. The biaxial nonmagnetic turntable for external field calibration of geomagnetic survey satellite vector magnetometer of claim 1, wherein: the base main body (2) is of a disc-shaped structure, and a plurality of lightening holes for lightening design are formed in the base main body; the foot support (1) and the base main body (2) are made of aluminum alloy materials.
3. The biaxial nonmagnetic turntable for external field calibration of geomagnetic survey satellite vector magnetometer of claim 1, wherein: the annular guide rail (3), the vertical rotating shaft (4), the vertical rotating shaft sleeve (5) and the vertical rotating guide shoe (8) are made of polytetrafluoroethylene materials, so that sliding friction force is reduced.
4. The biaxial nonmagnetic turntable for external field calibration of geomagnetic survey satellite vector magnetometer of claim 1, wherein: the vertical beam of the middle layer connecting frame (6) is positioned at 1/4 position of the horizontal beam.
5. The biaxial nonmagnetic turntable for external field calibration of geomagnetic survey satellite vector magnetometer of claim 1, wherein: the horizontal rotating guide rail (7), the horizontal rotating shaft outer shaft sleeve (16), the horizontal rotating shaft inner shaft sleeve (17), the end face sliding ring (19) and the horizontal rotating guide shoe (22) are made of polytetrafluoroethylene materials, so that sliding friction force is reduced.
6. The biaxial nonmagnetic turntable for external field calibration of geomagnetic survey satellite vector magnetometer of claim 1, wherein: the top layer link (20) is flat plate structure, and one end is provided with the triangle-shaped support, and this triangle-shaped support top is provided with the installation through-hole, and horizontal pivot (21) pass this installation through-hole in proper order, terminal surface slip ring (19), horizontal pivot inner shaft cover (17), axle sleeve locating ring (18), horizontal pivot inner shaft cover (17) are connected on the vertical roof beam mounting hole of middle level link (6), and horizontal pivot outer shaft cover (16) cover is in the horizontal pivot inner shaft cover (17) and axle sleeve locating ring (18) outside, with vertical roof beam mounting hole contact.
7. The biaxial nonmagnetic turntable for external field calibration of geomagnetic survey satellite vector magnetometer of claim 1, wherein: the top layer connecting frame (20) is used for installing a magneto-optical integrated platform (23), and the magneto-optical integrated platform (23) comprises a connecting part, a star sensor (25) and a vector magnetometer (24); one end of the rod-shaped connecting part is provided with a plurality of star sensors (25), and the other end is provided with a vector magnetometer (24).
8. The biaxial nonmagnetic turntable for external field calibration of geomagnetic survey satellite vector magnetometer of claim 7, wherein: the center of the vector magnetometer (24) is positioned on the vertical rotating shaft and the horizontal rotating shaft of the non-magnetic rotating table at the same time.
9. The biaxial nonmagnetic turntable for external field calibration of geomagnetic survey satellite vector magnetometer of claim 7, wherein: the extending direction of the connecting part, the extending direction of the top layer connecting frame (20) and the extending direction of the horizontal cross beam of the middle layer connecting frame (6) are parallel to the horizontal rotating shaft of the nonmagnetic turntable.
10. A posture adjustment method implemented by using the biaxial nonmagnetic turntable for external field calibration of geomagnetic survey satellite vector magnetometer according to any one of claims 1 to 9, characterized by comprising the steps of:
taking out the double-shaft non-magnetic turntable from a packaging box, and placing the double-shaft non-magnetic turntable on an external field calibration site;
leveling a base main body (2) of the double-shaft nonmagnetic turntable by utilizing a ground support (1), and adjusting a top layer connecting frame (20) to a horizontal position;
step three, mounting a magnetic measurement optical integrated platform (23) integrated with a vector magnetometer (24) and three star sensors (25) on a double-shaft nonmagnetic turntable;
step four, rotating the top layer connecting frame (20) around a horizontal shaft together with the magnetic measurement optical integrated platform (23), adjusting the top layer connecting frame to a target angle, and locking the top layer connecting frame by utilizing a horizontal rotation angle positioning pin (14) and a horizontal rotation locking mechanism (11);
step five, rotating the middle layer connecting frame (6) and the top layer connecting frame (20) around a vertical shaft together with the magnetic measurement optical integrated platform (23) to adjust to a target angle, and locking by utilizing vertical rotation locking mechanisms (10) at two ends;
and step six, after the calibration of the external field of the vector magnetometer is completed, the top layer connecting frame (20) is adjusted to a horizontal position, the magnetic measurement optical integrated platform (23) is disassembled, and the double-shaft non-magnetic turntable equipment is arranged in a packaging box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210173234.0A CN114593336B (en) | 2022-02-24 | 2022-02-24 | Double-shaft non-magnetic turntable for external field calibration of geomagnetic survey satellite vector magnetometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210173234.0A CN114593336B (en) | 2022-02-24 | 2022-02-24 | Double-shaft non-magnetic turntable for external field calibration of geomagnetic survey satellite vector magnetometer |
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| Publication Number | Publication Date |
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| CN114593336A CN114593336A (en) | 2022-06-07 |
| CN114593336B true CN114593336B (en) | 2023-06-30 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB691206A (en) * | 1950-09-30 | 1953-05-06 | John Aitken | Improvements in turntable apparatus for turning articles in transit |
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